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posted by Mayank Thursday, July 5, 2012 at 5:09am.
3 men and 4 boys can do a piece of work in14 days , while 4 men and 6 boys do the same work in 10 days . How long would it take one man to finish the same work?
1/14 = 3/m + 4/b 1/10 = 4/m + 6/b m = 70 b = 140
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